linux-kernel - Re: beeping patch for debugging acpi sleep

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Message-ID: <20070611165041.GD1759@elf.ucw.cz>
Date:	Mon, 11 Jun 2007 18:50:41 +0200
From:	Pavel Machek <pavel@....cz>
To:	Stefan Seyfried <seife@...e.de>
Cc:	Christian Leber <christian@...er.de>,
	Andrew Morton <akpm@...l.org>,
	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: beeping patch for debugging acpi sleep

Hi!

> How about (WARNING! I never have written i386 assembly, my last assembly
> experience was 20 years ago on Z80, so this is basically just copy'n paste,
> but i hope you get the idea):

We probably can do that, if there's big enough demand.

> > --- a/arch/i386/kernel/acpi/wakeup.S
> > +++ b/arch/i386/kernel/acpi/wakeup.S
> 
> > @@ -20,6 +35,9 @@ wakeup_code:
> >  	wakeup_code_start = .
> >  	.code16
> >  
> > +# Uncomment this to make your computer start producing ugly noise as soon
> > +# as BIOS returns to this real-mode entry point.
> 
>         testl   $4, video_flags - wakeup_code
>         jz      1f
> > +	BEEP
>    1:

Heh, I'd say you learn quickly :-). But for now, I'd like to have
basic patch in, and as reliable as possible.
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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